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Firstly,the stability and uniqueness of limit cycles of a kind of autonomous nonlinear dynamical system is discussed.

讨论了一类自治系统极限环的唯一性与稳定性。

The frequency response model of HAGC is estimated with correlative identification theory. The dynamical parameter model HAGC is estimated with LS, auxiliary variable LS, and bias-compensating LS respectively. It is proved with experiment that the methods proposed in the paper are accurate and practical.

5用相关辨识理论辨识了液压AGC压力闭环系统的频率特性，分别用普通最小二乘法、辅助变量法及偏差补偿算法辨识了该系统的动态参数模型，辨识结果验证了论文理论研究成果的正确性和可行性。

In terms of the averaging method, the dynamical stability was analyzed.

利用平均化方法的思想给出了粘弹性柱运动稳定状态的存在性条件。

The dynamical mechanism that the article turns our country city and development mode make one Baconian analysis.

本文把我国城市化的动力机制及发展模式作一归纳分析。

It provided a basis for building more accurate dynamical model. 4. Based on AD250 articulated dump truck multi-rigid body dynamics model, flexiblemulti-body models of suspension components for which the deformations are relatively important were built using finite element method. Modified Craig–Bampton modal synthesis and flexible multi-body methods were applied to build rigid-flexible coupling multi-body model of the truck. Dynamic simulations with different road profiles were performed.

基于AD250铰接式自卸车多刚体动力学模型，应用修正的Craig–Bampton模态综合法，对车辆行驶过程中相对变形较大的悬架杆件进行模态分析，把生成的模态中性文件引入到多刚体模型中取代相应的刚体，建立了相对多刚体模型更符合工程实际的整车刚柔耦合多体动力学模型。

Secondly, the paper sets forth the dynamical mechanism, and points out the main barricade factors.

其次，分析了淄博市区域空间结构演变的动力机制，指出了淄博市区域空间结构演变的主要障碍因素。

Be based on the need that advance gradually type reforms, a when undertake to civil aviaton enterprise incentive sex compasses is made serious content is to carry out compasses of price upper limit to make, make reform through price regulation, form the dynamical drive that seeks reasonable profit to ethical company.

基于渐进式改革的需要，对民航企业进行激励性规制的一个重要内容是实施价格上限规制，通过价格规制改革，对民族企业形成追求合理利润的动力激励。

Based on this model, using LQR and the Dragon Bergh extreme disposition method carried on the control to the two-wheeled self-balancing mobile robot in the posture and the speed, and obtained the stable dynamical balance process.

针对高阶次、不稳定、多变量、非线性、强耦合的两轮自平衡移动机器人系统，采用Lagrange方程推导出动力学模型，对其进行稳定性和可控性判断，并利用LQR和龙伯格极点配置的方法在此模型的基础上对两轮自平衡机器人的姿态和速度进行控制，可获得较为稳定的动态平衡过程。

The two-parameter unfoldings of local dynamical behavior,near the point of Hopf-Hopf bifurcation, is investigated theoretically.

理论分析了四维范式映射在Hopf-Hopf余维二分岔点附近的参数开折。

Bifurcation is a key problem in the study of nonlinear dynamical system.

分岔是非线性动力系统研究的中心问题之一。

Molecular Distillation is a kind of high vacuum distillation method, which is suitable for the separation of high boiling, heat sensitivity and viscidity products.

分子蒸馏技术是一种在高真空条件下进行的连续蒸馏过程，适合于分离高沸点、热敏性及具有生物活性的混合物。

They are to the Noughties what yuppies were to the Eighties .

那在六十年代是时髦的，但在八十年代肯定是过时了